chaos are we getting ddosed?!

looking at ocer 1000 connections to the stratum.. ive just change priorities... web updates has been slowed down

It's no problem if it comes to that. We actually did that early on already, it's pretty simple.

However, I have a feeling the "whale" is just using GPUs. The X11 algos are very hardware optimized to run on a GPU and I think it would have taken someone about this much time to implement that and launch a farm. Time will tell if I'm right, but it seems likely.  

If I'm correct, the hashrate shouldn't fall when difficulty resets (not > 20%) because the cost of running that setup is minimal.

If that's the case he might also try to blackmail us, asking 100 BTC for his miner or he ruins it for all of us. 

If there was more money at stake someone would've ordered a hit on him already.

My personal guess is that it's a large cpu farm and will in fact disappear after the next increase, but you are right, we will see.

The idea that there could be a way better GPU miner out there, even CPU assisted, means that we should have a talented developer looking into making an open source one, no?

I also want to promote KGW once more; I think it's the best retarget algo out there.

The X11 algo should be compatible with GPUs and very difficulty to port to ASICs. I did some work on a GPU miner for X11, which is here: https://github.com/evan82/darkcoin-sgminer

I have some 7970's laying around here, I'll see if I can get it working for us

And any thoughts on implementing KGW? I think the current retargeting actually works pretty well, if we have to hard fork after this I'm not opposed to implementing something like that.

The algorithms I used for our proof-of-work came originally from here:
http://csrc.nist.gov/groups/ST/hash/sha-3/Round2/submissions_rnd2.html

nope you get to keep your coins

difficult, not impossible, someone determined enough could do it... think about it, if you know how, and can see you could get some money out of it...

What is it missing in terms of completeness? (not that I can meaningfully contribute). I did a config make etc, throws HW errors (which is as should be expected for an incomplete program).

[08:45:13] Started sgminer 4.0.0
[08:45:31] Probing for an alive pool
[08:45:32] (null) difficulty changed to 0.003906
[08:45:32] Network diff set to 2.66M
[08:45:33] GPU0: invalid nonce count - HW error
[08:45:34] GPU0: invalid nonce count - HW error
[08:45:34] GPU0: invalid nonce count - HW error
[08:45:35] GPU0: invalid nonce count - HW error
[08:45:35] GPU0: invalid nonce count - HW error
[08:45:36] GPU0: invalid nonce count - HW error
[08:45:36] GPU0: invalid nonce count - HW error
[08:45:37] GPU0: invalid nonce count - HW error
[08:45:38] GPU0: invalid nonce count - HW error
[08:45:38] GPU0: invalid nonce count - HW error
[08:45:39] GPU0: invalid nonce count - HW error
[08:45:39] GPU0: invalid nonce count - HW error


...I just checked if its thread concurrency related, because it tends to mess things, but checking a few values around it seems that it isn't. This is on a 5830. Hmm.. no shares submission, just plenty of HW.


edit: debug output

[08:52:51] OCL NONCE 13269 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 13488 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 13833 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 14321 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 14476 found in slot 0
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] GPU 0 found something?
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] OCL NONCE 14712 found in slot 0
[08:52:51] GPU0: invalid nonce - HW error
[08:52:51] Discarded cloned or rolled work
[08:52:51] Set globalThreads to 256, hashes to 256
[08:52:51] GPU 0 found something?
[08:52:51] OCL NONCE 15122 found in slot 0